Merge pull request #2 from Snezhana-Sarmanova/master

Added HMM, Viterbi
Added tests
Static method for data
Merge pull request #3 from Snezhana-Sarmanova/master

Added tests for HMM
Merge pull request #4 from AirVan21/master

Test for Reader class
Static method for data
Added tests
Merge pull request #5 from Snezhana-Sarmanova/master

Changed algorithm Viterbi
Merge pull request #6 from AirVan21/master

Static method. Matrix separation
Merge pull request #7 from Snezhana-Sarmanova/master

Added methods in Viterbi
Added methods in Viterbi